KR900004862B1 - 야간 투시경의 영상증폭관 과다광 입력 보호회로 - Google Patents
야간 투시경의 영상증폭관 과다광 입력 보호회로 Download PDFInfo
- Publication number
- KR900004862B1 KR900004862B1 KR1019870010717A KR870010717A KR900004862B1 KR 900004862 B1 KR900004862 B1 KR 900004862B1 KR 1019870010717 A KR1019870010717 A KR 1019870010717A KR 870010717 A KR870010717 A KR 870010717A KR 900004862 B1 KR900004862 B1 KR 900004862B1
- Authority
- KR
- South Korea
- Prior art keywords
- circuit
- relay
- time delay
- image amplifier
- image
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/18—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical projection, e.g. combination of mirror and condenser and objective
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Amplifiers (AREA)
- Closed-Circuit Television Systems (AREA)
Abstract
Description
Claims (4)
- 야광 투시경의 영상증폭관(50)에 있어서, 야광 투시경의 영상증폭관(50)을 통해 입력되는 빛의 세기를 감지하여 전기적 세기로 변환하여 광신호를 감지하는 감지수단(10)과, 상기 감지수단(10)의 감지신호를 받아 설정된 펄스폭의 조정에 의해 소정시간의 시간지연에 따른 펄스신호를 발생하는 시간지연수단(20)과, 상기 지연수단(20)의 출력 펄스신호에 의해 온/오프로 스위칭되는 스위칭수단(30)과, 상기 스위칭수단(30)의 출력에 의해 전원전압 공급 릴레이를 구동하여 상기 영상증폭관(50)의 전원공급을 제어하여 과다광 입력시 상기 영상증폭관(50)을 보호하는 릴레이수단(40)으로 구성함을 특징으로 하는 회로.
- 제1항에 있어서, 스위칭수단(30)이 제4,5바이어스 저항 사이에 연결된 게이트단자와 릴레이 수단의 부단자 사이에 연결된 애노드단자 및 접지에 연결된 캐소드 단자를 가진 다이리스터(T2)로 구성함을 특징으로 하는 회로.
- 제1항에 있어서, 시간지연수단(20)이 프로그램어블타이머(T1)의 실현함을 특징으로 하는 회로.
- 제1항에 있어서, 감지단(10)이 비교수단으로 비교되어 입력 레벨을 조정함을 특징으로 하는 회로.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019870010717A KR900004862B1 (ko) | 1987-09-26 | 1987-09-26 | 야간 투시경의 영상증폭관 과다광 입력 보호회로 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019870010717A KR900004862B1 (ko) | 1987-09-26 | 1987-09-26 | 야간 투시경의 영상증폭관 과다광 입력 보호회로 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR890005553A KR890005553A (ko) | 1989-05-15 |
| KR900004862B1 true KR900004862B1 (ko) | 1990-07-08 |
Family
ID=19264777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019870010717A Expired KR900004862B1 (ko) | 1987-09-26 | 1987-09-26 | 야간 투시경의 영상증폭관 과다광 입력 보호회로 |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR900004862B1 (ko) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020131714A1 (en) * | 2018-12-18 | 2020-06-25 | Elbit Systems Of America Llc | Digital shutter control for bright flash recover in night vision equipment |
-
1987
- 1987-09-26 KR KR1019870010717A patent/KR900004862B1/ko not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020131714A1 (en) * | 2018-12-18 | 2020-06-25 | Elbit Systems Of America Llc | Digital shutter control for bright flash recover in night vision equipment |
| US10734183B2 (en) | 2018-12-18 | 2020-08-04 | Elbit Systems Of America, Llc | Digital shutter control for bright flash recover in night vision equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| KR890005553A (ko) | 1989-05-15 |
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